A hobbing device

Abstract

The present application relates to the field of disposable sanitary product production equipment, and particularly relates to a rolling cutting device, which is convenient for collecting waste, compact in structure, and good in installation convenience, comprising a cutter holder, a cutter roller, a light roller, two first bearing seats, two second bearing seats, a transmission mechanism, and a driving mechanism, the cutter roller comprises a shaft body, a roller body, and a ventilation connecting assembly, a passage is arranged at the central axis of the end surface of the shaft body, a through groove is arranged at the axial middle part of the circumferential surface of the shaft body and is communicated with the passage, the roller body is sleeved on the shaft body and is distributed at the axial middle part of the shaft body, at least one cutter is protruded on the circumferential surface of the axial middle part of the roller body, a discharge groove is arranged on the cutter and penetrates through the cutter, the discharge groove is communicated with the through groove, a guard ring is protruded at the axial two ends of the roller body, the ventilation connecting assembly is arranged at the axial one end of the shaft body and is used for connecting the passage with an external negative pressure suction device, and the driving mechanism is connected with the cutter roller and the light roller through the transmission mechanism, so that the cutter roller and the light roller rotate synchronously.

Description

Technical Field

[0001] This invention relates to the field of disposable hygiene product manufacturing equipment, and more particularly to a rolling and cutting device. Background Technology

[0002] Traditional slitting devices typically employ two types of waste removal mechanisms: one for removing waste remaining during continuous conveying after the product outline structure has been cut. For example, patent application CN202520144408.X discloses a slitting device with an automatic waste separation mechanism. Specifically, it includes a frame and a slitting machine. The frame is fixedly equipped with a slitting machine for continuously cutting both sides of the stacked material strip. Symmetrically mounted on the lower side of the frame are waste separation mechanisms for separating the slitting waste. The waste separation mechanism includes a separation component and a collection component. The lower side of the frame is equipped with a separation component for separating the upper and lower material strips, a collection component for collecting the interlayer between the upper and lower material strips, and a transmission component for driving the two sets of collection components. And for removing discontinuous waste that has a functional purpose in cutting materials such as through holes, for example, patent application number CN201720538421.9 discloses a rolling hole cutting device with waste collection function, including a first roller and a second roller arranged in parallel and spaced apart, a blade for cutting ventilation holes in packaging film is provided on the outer circumferential surface of the first roller, and further includes: a waste collection mechanism, which is matched with the second roller, for peeling off the waste generated by the blade cutting the packaging film from the packaging film and adsorbing it onto the surface of the second roller, and separating the waste adsorbed on the surface of the second roller from the second roller; and a waste collection mechanism, which is arranged below the second roller, for gathering the waste together and discharging it.

[0003] The waste removal mechanism in both of the above-mentioned rolling cutting devices is an additional waste collection mechanism set on the lower side of the first or second roller of the rolling cutting device. This makes the device occupy a large space and has poor installation convenience. In addition, the waste needs to be transferred after cutting before collection, which can easily cause the waste to scatter and affect the subsequent cutting quality. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention provides a rolling cutting device that facilitates waste collection, has a compact structure, and is easy to install.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A rolling cutting device includes a blade holder, a cutting roller, a smooth roller, two first bearing seats, two second bearing seats, a transmission mechanism, and a drive mechanism. The two axial ends of the smooth roller are rotatably mounted on the blade holder via the first bearing seats. The two axial ends of the cutting roller are rotatably mounted on the blade holder via the second bearing seats and are distributed around the periphery of the smooth roller. The cutting roller includes a shaft, a roller body, and a ventilation connecting assembly. A channel is provided at the central axis of the end face of the shaft. A through groove communicating with the channel is provided in the axial middle of the circumferential surface of the shaft. The roller body is sleeved on the shaft and distributed in the axial middle of the shaft. At least one cutting blade is protruding from the circumferential surface of the axial middle of the roller body. The cutting blade has a through-feed groove communicating with the through groove. Protective rings protrude from both axial ends of the roller body. The ventilation connecting assembly is located at one axial end of the shaft body and is used to connect the channel to an external negative pressure adsorption device. The drive mechanism is connected to the cutting roller and the smooth roller via the transmission mechanism, enabling the cutting roller and the smooth roller to rotate synchronously.

[0006] Furthermore, the discharge groove is distributed in the transverse middle of the cutter, and the discharge groove runs through the thickness direction of the cutter and the roller, so that the cutting edge is formed on both transverse sides of the cutter through the discharge groove.

[0007] Furthermore, an auxiliary blade is provided on the circumferential surface of the roller body and on the periphery of the cutter to prevent impact from the blade.

[0008] Furthermore, the lateral width of the through groove is not less than the lateral width of the discharge groove.

[0009] Furthermore, there are two cutters, which are symmetrically distributed along the axial centerline of the roller. The cutters have an arc-shaped structure, and the concave surface of the cutters faces outward.

[0010] Furthermore, the ventilation connection assembly includes a fixing member, a connecting member, and a bearing. The fixing member is located on the outer end face of one of the second bearing seats and is distributed on the outer side of the shaft. The fixing member is locked to the connecting member by bolts. The fixing member has a through hole communicating with the channel. The bearing is sleeved on one axial end of the shaft and is distributed between the shaft and the connecting member.

[0011] Furthermore, it also includes an electric adjustment mechanism disposed on the cutter holder and distributed at both ends of the optical roller for adjusting the clamping force between the cutter roller and the optical roller. The electric adjustment mechanism includes a drive motor, a threaded sleeve connected to the output end of the drive motor, a first threaded rod threadedly connected to the threaded sleeve, a locking block disposed at the lower end of the first threaded rod, and a connecting seat. The connecting seat is locked onto the first bearing seat, and the upper surface of the connecting seat is recessed with a locking groove to facilitate the insertion of the locking block.

[0012] Furthermore, it also includes a spacing adjustment mechanism disposed on the tool holder for adjusting the spacing between the cutting roller and the smooth roller. The spacing adjustment mechanism includes an upper top block locked on the lower surface of the first bearing seat, an inclined surface disposed on the lower surface of the upper top block, a lower top block locked on the upper surface of the second bearing seat, a wedge block disposed between the upper top block and the lower top block, and an adjusting screw rotatably disposed on the tool holder and threadedly connected to the wedge block.

[0013] Furthermore, the transmission mechanism includes a drive sprocket sleeved on the cutter roller, a driven sprocket sleeved on the smooth roller, two tension sprockets mounted on the cutter holder and distributed around the smooth roller, and a transmission chain, wherein the transmission chain is sleeved on the drive sprocket, the driven sprocket, and the two tension sprockets.

[0014] Furthermore, it also includes an adjustment mechanism disposed on the cutter holder and distributed at both ends of the optical roller for adjusting the clamping force between the cutter roller and the optical roller. The adjustment mechanism includes a second threaded rod threadedly connected to the cutter holder, a top plate rotatably disposed at the lower end of the second threaded rod, a limiting screw threaded through the top plate and threadedly connected to the first bearing seat, and a spring sleeved on the limiting screw and distributed between the top plate and the first bearing seat.

[0015] By adopting the aforementioned technical solution, the beneficial effects of this invention are as follows: This roller cutting device, by setting the discharge groove on the cutter and connecting it sequentially with the through groove and channel of the shaft, and finally connecting it to an external negative pressure adsorption device through a ventilation connection component, allows the waste generated during cutting to be directly sucked away along the built-in path of the discharge groove, through groove, and channel under negative pressure. There is no need to set an additional waste collection mechanism on the underside of the roller, which significantly reduces the space occupied by the device and improves the ease of installation. At the same time, the waste is collected instantly when it is generated, avoiding scattering during the transfer process and effectively ensuring the subsequent cutting quality. The setting of the guard ring can provide axial protection for the cutter and prevent it from being damaged by collision with the smooth roller. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the left-side structure of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the cutter roller structure in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the shaft and ventilation connection assembly in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the spacing adjustment mechanism in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the left-side structure of Embodiment 2 of the present invention. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0018] The embodiments of the present invention are as follows: Example 1

[0019] refer to Figures 1 to 5 As shown, a rolling cutting device includes a blade holder 1, a cutting roller 2, a smooth roller 3, two first bearing seats 4, two second bearing seats 5, a transmission mechanism 6, and a drive mechanism. The two axial ends of the smooth roller 3 are rotatably mounted on the blade holder 1 via the first bearing seats 4. The two axial ends of the cutting roller 2 are rotatably mounted on the blade holder 1 via the second bearing seats 5 and are distributed below the smooth roller 3. The cutting roller 2 includes a shaft 21, a roller body 22, and a ventilation connecting assembly 23. A channel 24 is provided at the central axis of the end face of the shaft 21, and a channel 24 is provided at the axial center of the circumferential surface of the shaft 21. The roller body 22 is sleeved on the shaft body 21 and distributed in the axial middle part of the shaft body 21. At least one cutter 26 is protruding on the circumferential surface of the axial middle part of the roller body 22. The cutter 26 has a through discharge groove 27, which is connected to the through groove 25. The roller body 22 has protective rings 28 protruding at both ends in the axial direction. The ventilation connection assembly 23 is located at one end of the shaft body 21 in the axial direction and is used to connect the channel 24 to the external negative pressure adsorption device. The drive mechanism is connected to the cutter roller 2 and the smooth roller 3 through the transmission mechanism 6, so that the cutter roller 2 and the smooth roller 3 rotate synchronously.

[0020] This roller cutting device, by setting the discharge groove 27 on the cutter 26 and connecting it sequentially to the through groove 25 and channel 24 of the shaft 21, and finally connecting it to an external negative pressure adsorption device through the ventilation connection component 23, allows the waste generated during cutting to be directly sucked away along the built-in path of the discharge groove 27, through groove 25, and channel 24 under negative pressure. There is no need to set an additional waste collection mechanism on the underside of the roller 22, which significantly reduces the space occupied by the device and improves the ease of installation. At the same time, the waste is collected instantly when it is generated, avoiding scattering during the transfer process and effectively ensuring the subsequent cutting quality. The setting of the guard ring 28 can provide axial protection for the cutter 26 to prevent it from being damaged by collision with the smooth roller 3.

[0021] Specifically, the discharge groove 27 is distributed in the transverse middle of the cutter 26, and the discharge groove 27 penetrates the thickness direction of the cutter 26 and the roller 22. The discharge groove 27 enables the cutting blades 100 to be formed on both transverse sides of the cutter 26, so that the material can be sheared in both directions during cutting, thereby improving cutting efficiency and cross-sectional quality. On the other hand, the discharge groove 27 being located in the middle facilitates the smooth discharge of waste from the central area of ​​the cutter, avoiding the accumulation or adhesion of waste at the edge of the blade 100, and ensuring the unobstructed flow of the discharge channel.

[0022] Furthermore, an auxiliary blade 29 is provided on the circumferential surface of the roller body 22 and on the periphery of the cutter 26 to prevent impact from the blade 100. The auxiliary blade 29 can provide auxiliary support and buffer when the cutter 26 cuts into the material, effectively dispersing the impact load on the root of the cutter at the moment of cutting, avoiding the blade 100 from cracking or premature wear due to long-term high-frequency impact, significantly extending the service life of the cutter 26, and ensuring the long-term stability of the cutting dimensions.

[0023] Meanwhile, the lateral width of the through groove 25 is not less than the lateral width of the discharge groove 27. Preferably, the lateral width of the through groove 25 is greater than the lateral width of the discharge groove 27. This ensures that the waste material entering from the discharge groove 27 will not be blocked or stuck when it enters the internal channel 24 of the shaft 21 due to the sudden narrowing of the channel 24. This ensures the unobstructed flow of the waste material negative pressure conveying path and improves the reliability and continuity of waste material collection.

[0024] In this embodiment, there are two cutters 26, which are symmetrically distributed along the axial centerline of the roller body 22. The cutters 26 have an arc-shaped structure, and the concave surface of the cutter 26 faces outward, so that the cutter roller 2 can complete two cutting actions simultaneously for each rotation, forming two product guide grooves, which significantly improves production efficiency. In addition, the arc-shaped structure combined with the outward-facing concave surface design allows the cutter 26 to make a progressive cut when contacting the material, reducing the instantaneous impact force. At the same time, the arc-shaped concave surface helps to guide the waste generated by cutting to gather in the discharge groove in the middle of the cutter, further improving the smoothness of waste collection.

[0025] It is worth noting that the ventilation connection assembly 23 includes a fixing member 101, a connecting member 102, and a bearing 103. The fixing member 101 is located on the outer end face of one of the second bearing seats 5 and is distributed on the outer side of the shaft 21. The fixing member 101 is locked to the connecting member 102 by bolts. The fixing member 101 is provided with a through hole 104 communicating with the channel 24. The bearing 103 is sleeved on one axial end of the shaft 21 and is distributed between the shaft 21 and the connecting member 102, which makes the assembly simple and the sealing reliable. The bearing 103 is located between the shaft 21 and the connecting member 102, so that when the shaft 21 rotates at high speed, the connecting member 102 and the fixing member 101 can remain stationary, thereby ensuring a stable connection of the external negative pressure pipeline and avoiding the complex structure of rotational sealing. The through hole 104 is directly connected to the channel 24, realizing efficient and low-leakage negative pressure conduction between the static interface and the dynamic channel, improving the stability and durability of the system operation.

[0026] In this embodiment, an electric adjustment mechanism 7 is also included, which is mounted on the cutter holder 1 and distributed at both ends of the optical roller 3 to adjust the clamping force between the cutter roller 2 and the optical roller 3. The electric adjustment mechanism 7 includes a drive motor 71, a threaded sleeve 72 connected to the output end of the drive motor 71, a first threaded rod 73 threadedly connected to the threaded sleeve 72, a locking block 74 located at the lower end of the first threaded rod 73, and a connecting seat 75. The connecting seat 75 is locked onto the first bearing seat 4. The upper surface of the connecting seat 75 is recessed with a locking groove 76 to facilitate the insertion of the locking block 74. By setting the electric adjustment mechanism 7, the clamping force between the cutter roller 2 and the optical roller 3 can be automatically and precisely adjusted. The drive motor 71 drives the threaded sleeve 72 to rotate, and the first threaded rod 73 moves up and down through the threaded transmission. Then, the locking block 74 and the connecting seat 75 drive the first bearing seat 4 to rise and fall. The operation is convenient and the adjustment accuracy is high. The two ends are set and can be controlled independently, which facilitates the equal or differentiated pressure adjustment on both sides according to the material thickness difference, improving the adaptability of the device to materials of different thicknesses and the cutting consistency.

[0027] Furthermore, it also includes a spacing adjustment mechanism 8 mounted on the blade holder 1 for adjusting the distance between the cutting roller 2 and the smooth roller 3. The spacing adjustment mechanism 8 includes an upper top block 81 locked to the lower surface of the first bearing seat 4, an inclined surface 82 mounted on the lower surface of the upper top block 81, a lower top block 83 locked to the upper surface of the second bearing seat 5, a wedge block 84 mounted between the upper top block 81 and the lower top block 83, and an adjusting screw 85 rotatably mounted on the blade holder 1 and threadedly connected to the wedge block 84. By rotating the adjusting screw 85, the wedge block 84 is driven to move horizontally. By utilizing the cooperation between the wedge block 84 and the inclined surface of the upper top block 81, the horizontal movement is converted into the vertical lifting and lowering of the first bearing seat 4, thereby realizing stepless and precise adjustment of the distance between the cutting roller 2 and the smooth roller 3. This structure has strong load-bearing capacity and good self-locking performance. After adjustment, it can stably maintain the set distance, effectively preventing the distance drift caused by vibration, and ensuring the accuracy and repeatability of the long-term cutting dimensions.

[0028] In this embodiment, the transmission mechanism 6 includes a drive sprocket 61 sleeved on the cutter roller 2, a driven sprocket 62 sleeved on the smooth roller 3, two tension sprockets 63 mounted on the cutter holder 1 and distributed around the smooth roller 3, and a transmission chain 64. The transmission chain 64 is sleeved on the drive sprocket 61, the driven sprocket 62, and the two tension sprockets 63, and adopts a sprocket and chain drive method, which has strong load-bearing capacity and precise transmission ratio, suitable for the heavy-load and continuous operation of the rolling cutter. The two tension sprockets 63 are distributed around the smooth roller 3, which can effectively adjust the tension of the transmission chain 64, compensate for the chain elongation caused by long-term use, and ensure that the cutter roller 2 and the smooth roller 3 always rotate synchronously, avoiding cutting misalignment caused by phase deviation. At the same time, the transmission structure is compact and easy to arrange in the limited space of the cutter holder. The drive mechanism is a servo motor. Example 2

[0029] refer to Figure 6 As shown, this second embodiment modifies some of the mechanisms disclosed in the first embodiment, specifically replacing the electric adjustment mechanism in the first embodiment. Specifically, it includes an adjustment mechanism 9 located on the blade holder 1 and distributed at both axial ends of the smooth roller 3 for adjusting the clamping force between the cutting roller 2 and the smooth roller 3. The adjustment mechanism 9 includes a second threaded rod 91 threadedly connected to the blade holder 1, a top plate 92 rotatably located at the lower end of the second threaded rod 91, a limiting screw 93 threaded through the top plate 92 and connected to the first bearing seat 4, and a spring 94 sleeved on the limiting screw 93 and distributed between the top plate 92 and the first bearing seat 4. Rotating the second threaded rod 91 allows for easy adjustment of the height of the top plate 92, thereby transmitting pressure to the first bearing seat 4 via the spring 94, achieving stepless adjustment of the clamping force. The spring 94 provides elastic buffering, absorbing instantaneous impact loads during cutting and preventing damage to the blade or smooth roller due to rigid overpressure. The limiting screw 93 serves both as a guide and limits the maximum upward position of the first bearing seat 4, preventing over-adjustment. The structure is simple, reliable, inexpensive, easy to maintain, and quick to adjust.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A rolling cutting device, characterized in that: The device includes a blade holder, a cutting roller, a smooth roller, two first bearing seats, two second bearing seats, a transmission mechanism, and a drive mechanism. The two axial ends of the smooth roller are rotatably mounted on the blade holder via the first bearing seats, and the two axial ends of the cutting roller are rotatably mounted on the blade holder via the second bearing seats, distributed around the periphery of the smooth roller. The cutting roller includes a shaft, a roller body, and a ventilation connecting assembly. A channel is provided at the central axis of the end face of the shaft, and a through groove communicating with the channel is provided in the axial middle of the circumferential surface of the shaft. The roller body is sleeved on the shaft and distributed in the axial middle of the shaft. At least one cutting blade protrudes from the circumferential surface of the axial middle of the roller body, and the cutting blade has a through-feed groove communicating with the through groove. Protective rings protrude from both axial ends of the roller body. The ventilation connecting assembly is located at one axial end of the shaft body and is used to connect the channel to an external negative pressure adsorption device. The drive mechanism is connected to the cutting roller and the smooth roller via the transmission mechanism, enabling the cutting roller and the smooth roller to rotate synchronously.

2. The rolling cutting device according to claim 1, characterized in that: The discharge groove is located in the middle of the horizontal direction of the cutter and extends through the thickness direction of the cutter and the roller. The discharge groove enables the cutting edge to be formed on both sides of the horizontal direction of the cutter.

3. The rolling cutting device according to claim 2, characterized in that: An auxiliary blade is provided on the circumferential surface of the roller body and on the periphery of the cutter to prevent impact from the blade.

4. The rolling cutting device according to claim 3, characterized in that: The lateral width of the through groove is not less than the lateral width of the discharge groove.

5. The rolling cutting device according to claim 1, characterized in that: There are two cutters, which are symmetrically distributed along the axial centerline of the roller. The cutters have an arc-shaped structure and the concave surface of the cutters faces outward.

6. The rolling cutting device according to claim 1, characterized in that: The ventilation connection assembly includes a fixing member, a connecting member, and a bearing. The fixing member is located on the outer end face of one of the second bearing seats and is distributed on the outer side of the shaft. The fixing member is locked to the connecting member by bolts. The fixing member has a through hole communicating with the channel. The bearing is sleeved on one axial end of the shaft and is distributed between the shaft and the connecting member.

7. The rolling cutting device according to any one of claims 1 to 6, characterized in that: It also includes an electric adjustment mechanism for adjusting the clamping force between the cutter roller and the light roller, which is located on the cutter holder and distributed at both ends of the light roller. The electric adjustment mechanism includes a drive motor, a threaded sleeve connected to the output end of the drive motor, a first threaded rod threadedly connected to the threaded sleeve, a locking block located at the lower end of the first threaded rod, and a connecting seat. The connecting seat is locked onto the first bearing seat, and the upper surface of the connecting seat is recessed with a locking groove to facilitate the insertion of the locking block.

8. The rolling cutter according to claim 7, characterized in that: It also includes a spacing adjustment mechanism mounted on the tool holder for adjusting the spacing between the cutting roller and the smooth roller. The spacing adjustment mechanism includes an upper top block locked on the lower surface of the first bearing seat, an inclined surface mounted on the lower surface of the upper top block, a lower top block locked on the upper surface of the second bearing seat, a wedge block mounted between the upper top block and the lower top block, and an adjusting screw rotatably mounted on the tool holder and threadedly connected to the wedge block.

9. The rolling cutting device according to claim 8, characterized in that: The transmission mechanism includes a drive sprocket sleeved on the cutter roller, a driven sprocket sleeved on the smooth roller, two tension sprockets mounted on the cutter holder and distributed around the smooth roller, and a transmission chain. The transmission chain is sleeved on the drive sprocket, the driven sprocket, and the two tension sprockets.

10. The rolling cutting device according to any one of claims 1 to 6, characterized in that: It also includes an adjustment mechanism for adjusting the clamping force between the cutter roller and the smooth roller, which is provided on the cutter holder and distributed at both ends of the smooth roller. The adjustment mechanism includes a second threaded rod threadedly connected to the cutter holder, a top plate rotatably provided at the lower end of the second threaded rod, a limiting screw threaded through the top plate and threadedly connected to the first bearing seat, and a spring sleeved on the limiting screw and distributed between the top plate and the first bearing seat.

Images